Alert archive / Oklahoma / Special Weather Statements in 2020
Special Weather Statement, NWS Norman, OK
NWS Norman, OK issued this special weather statement at Aug 5, 2020, 2:05 AM CDT for Harper County, Oklahoma. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 5, 2020, 2:05 AM CDT (07:05 UTC)
- Expired
- Aug 5, 2020, 2:30 AM CDT
- In force
- 25 min
- Issued by
- NWS Norman, OK
County Harper County, OK
The radar
The Vance AFB radar (KVNX), 96 km from the middle of the area, began a volume at 07:06 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Dodge City, (KDDC), launched 00:00Z, 7.1 hours before the alert went out and 122 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1447 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 177 m²/s²
- 0-3 km storm-relative helicity
- 400 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Norman, OK wrote its last area forecast discussion before this special weather statement went out at Aug 5, 2:03 AM CDT, 2 minutes earlier.
Area forecast discussion, Aug 5, 2:03 AM CDT, 2 minutes before
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Special weather statement, Aug 5, 1:25 AM CDT, 40 minutes before
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</html>Special weather statement, Aug 5, 1:42 AM CDT, 23 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
142 AM CDT Wed Aug 5 2020
OKZ011-050715-
Major OK-
142 AM CDT Wed Aug 5 2020
...SIGNIFICANT WEATHER ADVISORY FOR southeastern Major County Until
215 AM CDT...
AT 137 AM CDT, a strong thunderstorm was located near Isabella,
moving east at 20 MPH.
HAZARDS INCLUDE...
Hail up to the size of nickels...
Locations impacted include...
Ames and Isabella.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the weather situation closely and be alert for threatening
weather conditions.
&&
LAT...LON 3617 9811 3617 9825 3623 9842 3634 9840
3635 9811
TIME...MOT...LOC 0637Z 280DEG 16KT 3627 9830
BRBSpecial weather statement, Aug 5, 1:59 AM CDT, 6 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
159 AM CDT Wed Aug 5 2020
OKZ005-006-050730-
Alfalfa OK-Woods OK-
159 AM CDT Wed Aug 5 2020
...SIGNIFICANT WEATHER ADVISORY FOR Alfalfa and eastern Woods
Counties Until 230 AM CDT...
AT 156 AM CDT, strong thunderstorms were along a line extending from
7 miles west of Hardtner to near Waynoka, moving east at 35 MPH.
HAZARDS INCLUDE...
Hail up to one-half inch diameter...
Wind gusts to 50 MPH...
Minor flooding in areas of poor drainage...
Frequent cloud to ground lightning...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the weather situation closely and be alert for threatening
weather conditions.
&&
LAT...LON 3646 9827 3646 9853 3645 9854 3655 9896
3660 9896 3661 9898 3700 9884 3700 9812
TIME...MOT...LOC 0656Z 269DEG 30KT 3698 9878 3658 9889
BRBSpecial weather statement, Aug 5, 2:00 AM CDT, 5 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE Norman OK 200 AM CDT Wed Aug 5 2020 OKZ017-023-024-050730- Canadian OK-Caddo OK-Blaine OK- 200 AM CDT Wed Aug 5 2020 ...SIGNIFICANT WEATHER ADVISORY FOR southwestern Canadian... northeastern Caddo and south central Blaine Counties Until 230 AM CDT... AT 156 AM CDT, a strong thunderstorm was located near Bridgeport, moving southeast at 20 MPH. HAZARDS INCLUDE... Hail up to the size of nickels... Locations impacted include... El Reno, Hinton, Geary, Calumet, Bridgeport and Cedar Lake. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the weather situation closely and be alert for threatening weather conditions. && LAT...LON 3551 9844 3567 9834 3557 9799 3533 9815 TIME...MOT...LOC 0656Z 298DEG 15KT 3556 9832 BRB
Special weather statement, Aug 5, 2:05 AM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE Norman OK 205 AM CDT Wed Aug 5 2020 OKZ004-005-010-050730- Woodward OK-Harper OK-Woods OK- 205 AM CDT Wed Aug 5 2020 ...SIGNIFICANT WEATHER ADVISORY FOR northern Woodward...eastern Harper and northwestern Woods Counties Until 230 AM CDT... AT 201 AM CDT, strong thunderstorms were along a line extending from 10 miles south of Buttermilk to 5 miles north of Fort Supply, moving east at 30 MPH. HAZARDS INCLUDE... Hail up to one-half inch diameter... Wind gusts to 50 MPH... Minor flooding in areas of poor drainage... PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the weather situation closely and be alert for threatening weather conditions. && LAT...LON 3700 9882 3649 9901 3663 9972 3700 9965 TIME...MOT...LOC 0701Z 273DEG 26KT 3696 9932 3665 9958 BRB
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 11:29 PM CDT | Special Weather Statement | OUN | Major | 31 min |
| Aug 4, 11:44 PM CDT | Severe Thunderstorm Warning | OUN | Blaine, Dewey, Major | 46 min |
| Aug 5, 12:29 AM CDT | Special Weather Statement | OUN | Blaine | 31 min |
| Aug 5, 12:43 AM CDT | Special Weather Statement | OUN | Major | 32 min |
| Aug 5, 12:55 AM CDT | Severe Thunderstorm Warning | OUN | Blaine, Major | 35 min |
| Aug 5, 1:24 AM CDT | Special Weather Statement | OUN | Canadian | 36 min |
| Aug 5, 1:25 AM CDT | Special Weather Statement | OUN | Kingfisher | 35 min |
| Aug 5, 1:26 AM CDT | Special Weather Statement | OUN | Alfalfa | 34 min |
| Aug 5, 1:28 AM CDT | Severe Thunderstorm Warning | OUN | Blaine, Kingfisher, Major | 47 min |
| Aug 5, 1:42 AM CDT | Special Weather Statement | OUN | Major | 33 min |
| Aug 5, 1:59 AM CDT | Special Weather Statement | OUN | Alfalfa, Woods | 31 min |
| Aug 5, 2:00 AM CDT | Special Weather Statement | OUN | Canadian | 30 min |
| Aug 5, 2:09 AM CDT | Special Weather Statement | OUN | Logan | 36 min |
| Aug 5, 2:15 AM CDT | Severe Thunderstorm Warning | OUN | Blaine, Kingfisher | 45 min |
| Aug 5, 2:30 AM CDT | Special Weather Statement | OUN | Alfalfa, Woods | 30 min |
| Aug 5, 2:32 AM CDT | Areal Flood Advisory | OUN | Harper, Woods, Woodward | 118 min |
| Aug 5, 2:34 AM CDT | Areal Flood Advisory | OUN | Blaine, Caddo, Canadian | 116 min |
| Aug 5, 2:53 AM CDT | Flash Flood Warning | OUN | Blaine | 3 hr |
| Aug 5, 3:04 AM CDT | Special Weather Statement | OUN | Garfield, Major | 41 min |
| Aug 5, 3:36 AM CDT | Areal Flood Advisory | OUN | Kingfisher | 114 min |
| Aug 5, 4:36 AM CDT | Special Weather Statement | OUN | Hughes | 24 min |
| Aug 5, 4:42 AM CDT | Special Weather Statement | OUN | Grady | 33 min |
| Aug 5, 5:02 AM CDT | Areal Flood Advisory | OUN | Canadian | 118 min |
| Aug 5, 5:14 AM CDT | Special Weather Statement | OUN | McClain | 31 min |
| Aug 5, 5:45 AM CDT | Areal Flood Warning | OUN | Blaine, Kingfisher | 3 hr |
| Aug 5, 5:49 AM CDT | Special Weather Statement | OUN | Coal | 26 min |
| Aug 5, 7:21 AM CDT | Areal Flood Advisory | OUN | Coal, Pontotoc | 3 hr |
Nearby
Special Weather Statements in Oklahoma, 2020Every special weather statement in 2020
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.